Core-bar.



E. n. PROFITT.

CORE BAR. APPLIOATIOI FILED AUG. 9, 1912.

Patented Apr. 8, 1913.

J5 BQ/''L'l/NVENTOR ATTORNEY nnwann HILL- Paoirrrr'r.

` THOMAS W. ROBERTS, Ol" RADFORD,

or morena-VIRGINIA,'AssIoNoa or ONE-HALF rro VIRGINIA.

CORE-BAR.

Specification ot Letters Patent.

Patented Apr. 8, 1913.

Application ma Aa'guite. 1912. serial No. 714,252.

To all whom it may concern: v

Be it known that I, EDWARD H. P aorrrrr, a citizen of the United States,residing at Radford, in the county of Montgomery and State of Vir inia,have invented a new and useful Coreiar, of which the following is aspecification. l l

The invention relatcs'to improvements 1n eore'bars. l

The object of the present'inventioniis to improve I the construction oftubular core hars and to eliminate expensive hay rope in the making ofthefirst coat and pi )es and other hollowbodics, and to .provire a'simple, eflicient andl com inexpensive core bar, equi )pcd withI meansfor holding a first coato terial, such as saw dustand capable ofenabliiw such coatto be rapidlypand uniformijy applied to the core barwhen', the latter is in either a cold .orheated-,conditiom With theseand other objects in view," the invention consists in theconstructionand novel combination of parts hereinafter'fully described,illustrated inthe accompanying drawing, and pointed out in the claimshere-, to ap iended; 1t being understood that varif.

ous c anges 1n the form, proportion," siae and minor detailsoficonstructiomwithm the scope of the claims, may be resorted to withoutdeparting from the spirit orsacrificing any of the advantagesof theinven-4 tion.

In the drawing-Figuro 1 is a plan view,

of a core bar, constructed in accordance with this invention, and anapparatus for .applys ing the first coat to thecore bar. Fig-,2 is

an enlarged transverse .sectional viewof the.

eure bar, showing the ifirst'coat applied to the same.

tions presenting flat inwardly converging ground leaves, such asmolasses and water,

for casting aratively combustible -rnacoperate with Fig. 3 is a detailsectional view v of one of the bearings of the apparatus.-

'pipeand provided at' -side, faces 3 and forming intervening dovetailedgrooves or spaces 4, into winch the combustible material 5 constitutingthe first coat lis compressed. The first coat, which may consist of anysuitable comminuted combustible material, such as saw dust, etc., and asuitable binder, is designed to take the place of expensive hay rope.lVhile the fiat side facesmof the inner portions of l,the ribs arearranged at a slight angle to 4each other to dovetail the materialbetween lthe ribs, the latter may, however, have parallel side faces attheir inner portions, or constructed 1n any other suitable manner .so asto retain the material on the core bar. -Thel outer 'are tapere ortionsof the longitudinal ribs to' a sharp longitudinal outer edge 6 tofacilitate the ullmg of the core bars, the sharp outere ges beingadapted Ito cuttheir vway through the core bar material-when the core,bars are ulled.

' The corel bar .1 `is provi ed at intervals in the vbottom of thegrooves or spaces between the ribs lwith combined vent andancher/openings 7. .These openings, which 4"mayfbe either round, square,or any other preferred lform, are,adapted to receive portions ofthefirst` coat, the material thereof beingpressed into the openings 7 whenthe first coat is applicdto the core bar by the means hereinafterdescribed. The openings i the ribsinholdingthe material ofthe first coatto the core bars. The ribs'. are embedded in the first-coat, which ispreferably lof a thickness inexc'ess of the heightof the ribsy so as toe'xtend slightly beyondlthe same, as clearly illustrated in Fia. 2 ofthedrawing.

.The corebarisfprovided with smooth terminal' portions 8 and 9 to4 fitadjustable bearings'lO slidablymounted in a supporting frame 11 andadaptedto be adjusted transverselyv thereof to move the .core bartowardA and from apressure roller 12 to vary the thickness ofthe firstcoat. The slidable bearings, which may be guided in any. suitablemanner. are adjusted by screws 13a-'provided at their outer portionswith crank" handles 14 and connected at their iiiner ends Ato theadjustable bearings, lock xruts;.15 "j,beingpreferably mounted on the?outrportions'of the adjusting screws to se'- cut t e bearings in theiradjustment` The core bar and the pressure roller extend .longitudinallyof the fiale-.in.\elose source, is fed to the corebar and is'pressedagainst the same and forced into the grooves and openings thereof by thepressure roller.'

The core bar and-the pressure roller are .siinultaneoi'isly rotated'.lby the means` liere-4 mafter described, 'which cause theadjacent,l

portions to move downwardly.

The end 8 of the core bar is provided with` a tubular extensioii'l,which is adapted to be secured by-'a pin'l?, or otlier'fsuitablefi\steiiiiig"device,' to a slidablejcoupling sleeve 18,-inonnted on. anoperating shaftI 1f).

and slidably int-erlocked with the same by a feather or spline 20. The oeratingshaft 19, which' is'joiirnaled in a suitable bearinf1r 21 of thelframe at one end thereof, exten s longitudinally ofthe sam'e, and thesleeve is slidable along the shaft19 to carry it into and out of thetubuliili; extension 16 of the core bar. TheI in 17 pierces the tubularextension and tie sleeveand engages a' transverse lsocket 22 in theinner portiony of Ithe operating shaft 19. l

The operating shaft, which extends beyond one end of thesupporting-frame equipped witha crank liandle`2, or otl suitable oieratin ed with the sha t 24 of the pressure roller by gearingconsisting of a pinion 25v andv gear wheel'QG.' The pinion 25 is.mounted on the'outer portion of the operating shaft4 and` the'gear 26is suitably fixed to the adjacent end of the shafty24 of the pressure`In practice the teeth of thelgears will'be of sufiicient length topermita lim'- ited adjustment of the core bar without earg roller.

rvingthe gears out of'mesli.A When the handle 23 of the operating shaftisturnedf the core bar and the pressure roller'will bel simultaneouslyrotated,r` thel adjacent 'portions r'noving in they same direction Abutat different speeds due to the diii'erencelin' the diameter of the ears.

The combustib e material'may-be a plied to the'core bar when the latteris eit er in a heated or cold condition, and the retain-y ier device,and itl is connect-j iirstfvcoat,l whereby "a mixture containingcoiiiminuted combustible material may be applied to the core bar in acold or heated .,condition, said ribs having sharp loiigitudinal outeredges adapted to cut their way throu h the core material when the corebai' is pul ed.

2. A tubular core bar provided with exteriorlongitudinal ribs spacedapart and having fiat side faces and forming intervening grooves forholding a coat of comminuted combustible material in which the 'ribs areembedded to retain the same on the ,core bar.

3. A core bar provided with longitudinal ribs spaced apart to forminterveningr lgrooves arranged to receive a mixture of tcombustiblematerial for holding the saine on the core bar, said ribs being providedwith ta )ered outer portions forming sharp edges a apted to cut a waythrough the core ibar material when the core bars are iulled. j 4. Atubular core bar provided with exterior longitudinal ribs forminffintervening Ifgrooves arranged to reeive and hold a mix- `itui'e ofcombustible material to retain the same on the core bar, the latterbeing also provided at the spaces between the ribs lwith combined ventand anchor openings communicating with the interior of the tnllbularcore bar and adapted to also receive portions ofthe said material toassist in lding the same.

5. A tubular core bar provided with an annular series of exteriorlongitudinal ribs of uniform size spaced apart and presentinginwardly'diver ing side faces to forni dovetailed ooves Ier vretaining amixture of combusti le material on the core bar.

6. A core bar having spaced'exterioi longitudinal ribs provided at theirinner portions with fiatside faces and having their outer portionstapered to a sharp edge, said core bar being also provided between theribs ,with openings. 7. A tubular core bar provided on its outerperiphery with longitudinal ribs which are disposed radially withrelation to the center of the bar, said ribs being se arated by spaceswhich spaces are wider at t ie hase. of t e ribs than at an intermediatepoint thereof.

In testimony, that I claim the foregoing as my own, I have heretoatiixed my signature in the presence of two witnesses.

EDWARD HILL PROFFITT.

Witnesses t HENRY T. Roniaars, J. S. WRIGHT.

Capies of this patent may bo obtained for il" cent: each, by addressingthe Commissioner ot' Patents. Washington, D. O.

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